Posted 5 years ago
This is a Yankee No 1555 Breast Drill. The brace is there so you can put your shoulder into it. The last patent date on it is 1910 but apparently it was made for a few years after that.
O the silver section are the settings. PLAIN, L.H. Ratchet, R.H., R.H. DOUBLE, and LOCK.
The other side of the silver section Has Yankee 1555 and the patent dates which are July 23 03 and Aug 23 10.
I have a similar hand drill coming up in the queue.